EP0495655A1 - Joining method - Google Patents
Joining method Download PDFInfo
- Publication number
- EP0495655A1 EP0495655A1 EP19920300368 EP92300368A EP0495655A1 EP 0495655 A1 EP0495655 A1 EP 0495655A1 EP 19920300368 EP19920300368 EP 19920300368 EP 92300368 A EP92300368 A EP 92300368A EP 0495655 A1 EP0495655 A1 EP 0495655A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- thermoplastic
- coating
- aluminium alloy
- composite
- members
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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Classifications
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J5/00—Adhesive processes in general; Adhesive processes not provided for elsewhere, e.g. relating to primers
- C09J5/06—Adhesive processes in general; Adhesive processes not provided for elsewhere, e.g. relating to primers involving heating of the applied adhesive
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C63/00—Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor
- B29C63/48—Preparation of the surfaces
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
- B29C65/34—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement"
- B29C65/3404—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the type of heated elements which remain in the joint
- B29C65/3436—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the type of heated elements which remain in the joint comprising independent continuous fibre-reinforcements
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
- B29C65/34—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement"
- B29C65/3468—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the means for supplying heat to said heated elements which remain in the join, e.g. special electrical connectors of windings
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
- B29C65/34—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement"
- B29C65/3472—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the composition of the heated elements which remain in the joint
- B29C65/3484—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the composition of the heated elements which remain in the joint being non-metallic
- B29C65/3492—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the composition of the heated elements which remain in the joint being non-metallic being carbon
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
- B29C65/34—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement"
- B29C65/3472—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the composition of the heated elements which remain in the joint
- B29C65/3484—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the composition of the heated elements which remain in the joint being non-metallic
- B29C65/3496—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the composition of the heated elements which remain in the joint being non-metallic with a coating, e.g. a metallic or a carbon coating
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
- B29C65/4805—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding characterised by the type of adhesives
- B29C65/481—Non-reactive adhesives, e.g. physically hardening adhesives
- B29C65/4815—Hot melt adhesives, e.g. thermoplastic adhesives
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
- B29C65/50—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding using adhesive tape, e.g. thermoplastic tape; using threads or the like
- B29C65/5057—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding using adhesive tape, e.g. thermoplastic tape; using threads or the like positioned between the surfaces to be joined
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/82—Testing the joint
- B29C65/8253—Testing the joint by the use of waves or particle radiation, e.g. visual examination, scanning electron microscopy, or X-rays
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/01—General aspects dealing with the joint area or with the area to be joined
- B29C66/05—Particular design of joint configurations
- B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
- B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
- B29C66/112—Single lapped joints
- B29C66/1122—Single lap to lap joints, i.e. overlap joints
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
- B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
- B29C66/43—Joining a relatively small portion of the surface of said articles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
- B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
- B29C66/45—Joining of substantially the whole surface of the articles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
- B29C66/71—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the composition of the plastics material of the parts to be joined
- B29C66/712—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the composition of the plastics material of the parts to be joined the composition of one of the parts to be joined being different from the composition of the other part
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
- B29C66/72—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined
- B29C66/723—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined being multi-layered
- B29C66/7232—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined being multi-layered comprising a non-plastics layer
- B29C66/72321—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined being multi-layered comprising a non-plastics layer consisting of metals or their alloys
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
- B29C66/73—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
- B29C66/739—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset
- B29C66/7392—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
- B29C66/74—Joining plastics material to non-plastics material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
- B29C66/74—Joining plastics material to non-plastics material
- B29C66/742—Joining plastics material to non-plastics material to metals or their alloys
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
- B29C66/74—Joining plastics material to non-plastics material
- B29C66/742—Joining plastics material to non-plastics material to metals or their alloys
- B29C66/7422—Aluminium or alloys of aluminium
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/80—General aspects of machine operations or constructions and parts thereof
- B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
- B29C66/832—Reciprocating joining or pressing tools
- B29C66/8322—Joining or pressing tools reciprocating along one axis
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/12—Bonding of a preformed macromolecular material to the same or other solid material such as metal, glass, leather, e.g. using adhesives
- C08J5/124—Bonding of a preformed macromolecular material to the same or other solid material such as metal, glass, leather, e.g. using adhesives using adhesives based on a macromolecular component
- C08J5/125—Adhesives in organic diluents
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
- B29C65/06—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using friction, e.g. spin welding
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
- B29C65/06—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using friction, e.g. spin welding
- B29C65/0672—Spin welding
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
- B29C65/08—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using ultrasonic vibrations
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
- B29C65/10—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using hot gases (e.g. combustion gases) or flames coming in contact with at least one of the parts to be joined
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
- B29C65/14—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation
- B29C65/1403—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation characterised by the type of electromagnetic or particle radiation
- B29C65/1425—Microwave radiation
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
- B29C65/18—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
- B29C65/34—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement"
- B29C65/3472—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the composition of the heated elements which remain in the joint
- B29C65/3476—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the composition of the heated elements which remain in the joint being metallic
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
- B29C65/34—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement"
- B29C65/36—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" heated by induction
- B29C65/3604—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" heated by induction characterised by the type of elements heated by induction which remain in the joint
- B29C65/3636—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" heated by induction characterised by the type of elements heated by induction which remain in the joint comprising independent continuous fibre-reinforcements
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
- B29C65/34—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement"
- B29C65/36—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" heated by induction
- B29C65/3672—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" heated by induction characterised by the composition of the elements heated by induction which remain in the joint
- B29C65/3684—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" heated by induction characterised by the composition of the elements heated by induction which remain in the joint being non-metallic
- B29C65/3696—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" heated by induction characterised by the composition of the elements heated by induction which remain in the joint being non-metallic with a coating
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
- B29C65/4895—Solvent bonding, i.e. the surfaces of the parts to be joined being treated with solvents, swelling or softening agents, without adhesives
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/01—General aspects dealing with the joint area or with the area to be joined
- B29C66/02—Preparation of the material, in the area to be joined, prior to joining or welding
- B29C66/024—Thermal pre-treatments
- B29C66/0242—Heating, or preheating, e.g. drying
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
- B29C66/71—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the composition of the plastics material of the parts to be joined
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
- B29C66/72—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined
- B29C66/721—Fibre-reinforced materials
- B29C66/7212—Fibre-reinforced materials characterised by the composition of the fibres
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
- B29C66/72—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined
- B29C66/721—Fibre-reinforced materials
- B29C66/7214—Fibre-reinforced materials characterised by the length of the fibres
- B29C66/72141—Fibres of continuous length
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
- B29C66/73—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
- B29C66/739—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset
- B29C66/7394—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoset
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2705/00—Use of metals, their alloys or their compounds, for preformed parts, e.g. for inserts
Definitions
- This invention relates to a method of joining members, particularly but not exclusively comprising dissimilar materials.
- a method of joining members comprises applying a thermoplastic coating to a surface of at least one of the members by applying the thermoplastic material in solution to the surface and thereafter depositing the thermoplastic material out of solution on to the surface; and joining the two members via the coating(s).
- Examples of members which can be joined using this technique include metal to thermoplastic, for example, APC-2 (peek/carbon composite) to L113 grade aluminium alloy ; metal to ceramic (for example alumina to L113 grade aluminium alloy); metal to metal (for example L113 grade aluminium alloy to a coupon of similar material); ceramic to ceramic (for example silicon carbide reinforced borosilicate glass composite to a coupon of similar material); ceramic to thermoplastic, for example, Cetex (PEI/Aramid composite) to alumina; thermoplastic to thermoset (for example, APC-2 to Hercules 3501 epoxymatrix carbon fibre composite); and thermoplastic composite to wood.
- APC-2 eek/carbon composite
- metal to ceramic for example alumina to L113 grade aluminium alloy
- metal to metal for example L113 grade aluminium alloy to a coupon of similar material
- ceramic to ceramic for example silicon carbide reinforced borosilicate glass composite to a coupon of similar material
- ceramic to thermoplastic for example, Cetex (PEI/Aramid composite) to a
- the key to the successful bonding method is the ability to deposit the thermoplastic material out of solution onto the surface of the member. This enables a strong bond to be achieved between the thermoplastic material and the member following which a good bond can then be achieved between the thermoplastic coating and the other member.
- polymers have molecules which are either polar or non-polar.
- Polar based polymers have molecules which tend to align themselves with an externally applied electric field (for example PVC). These materials tend to have molecules which are not symmetrical i.e. they possess a dipole moment.
- Guide lines for determining suitable combinations of thermoplastic materials and solvents can then be set out as follows:
- thermoplastic member comprises a thermoplastic coating provided on a metal member.
- the step of providing a coating of thermoplastic material includes a step of pre-treating the metal member and thereafter providing the coating.
- This pre-treatment of the surface may take a variety of forms depending upon the material under consideration. For metals this can include grit blasting or anodizing.
- the pretreatment step is not limited to metals and may be applied to other materials. For thermoplastic composite ceramics it may be degreasing. However, in the case of ceramics, a pretreatment may not be necessary.
- the joining step may comprise any suitable plastics joining technique, for example, hot gas welding, vibration welding, ultrasonic welding, spin welding, microwave welding, resistance implant welding, dielectric welding, adhesive bonding, induction welding, extrusion welding or solvent welding.
- Three preferred techniques include resistive implant welding (e.g. aluminium alloy to APC-2), induction welding (e.g. APC-2 to hercules 3501 thermosetting composite) and baking (e.g. alumina to cetex aramid composite).
- resistive implant welding e.g. aluminium alloy to APC-2
- induction welding e.g. APC-2 to hercules 3501 thermosetting composite
- baking e.g. alumina to cetex aramid composite
- Figure 1 illustrates two materials to be joined 8,11, eg a metal and a ceramic. At least the metal 8 has been surface pretreated and then both materials have been coated with a polymer coating 6.
- a prepreg insert including carbon fibres 9 covered by polymer films 7 is placed between the two materials 8,11. The joint is effected by passing an electric current down the carbon fibres 9 in the prepreg insert. The current causes resistive heating of the polymer films 7 which fuse to the polymer coating 6 on the surface of each piece of material 8,11 to be joined. The heating is to a temperature of approximately 300°C under a pressure 16 of 1.3 N/mm2 and for a total weld time of 40 seconds.
- the polymer coating 6 (e.g. polyetherimide (PEI) or polyethersulphone (PES), generally a thermoplastic coating) is applied in liquid form having been dissolved in a suitable solvent mixture, e.g. 48% by volume 1,1,2-trichloroethane + 48% by volume Dichloromethane + 4% by volume Methanol.
- a suitable solvent mixture e.g. 48% by volume 1,1,2-trichloroethane + 48% by volume Dichloromethane + 4% by volume Methanol.
- the solvent subsequently evaporates leaving the polymer coating 6 on the material surface.
- the pretreatment may be by an "unsealed anodized" method which involves immersing the specimen in a bath of a suitable acid held at constant temperature. An electric current then flows through the acid from the specimen to another electrode. The effect on the surface of the specimen is to produce pores on a microscopic scale to which the thermoplastic coating 6 can adhere to produce a strong interface.
- thermoplastic Other metallic materials to be joined to thermoplastic include steel and titanium which can be subjected to an appropriate pretreatment step.
- the pretreatment schedule for the aluminium alloy was as follows:-
- the alloy was coated in a layer of thermoplastic polyethermide (PEI which is available from GE plastics as "Ultem”).
- PEI thermoplastic polyethermide
- the coating was supplied from a solvent solution prepared in the following way:- A solvent mixture of 48% Dichloromethane, 48% 1,1,2 - Trichloroethane, and 4% Methanol was made up (all proportions by volume).
- the resultant liquid was painted onto the surface of the aluminium alloy using a paintbrush immediately after the completion of the pretreatment.
- This method of coating is known to produce a plastic layer of non-uniform thickness over the surface of the alloy.
- a single coating has been measured as being between 2 and 5 ⁇ m in depth by a scanning electron microscope. The solvents evaporate from the surface of the alloy leaving a solid plastic coating.
- the coated aluminium alloy 20 ( Figure 2) is then ready to be joined to a piece of thermoplastic composite material such as a member 21 made of APC-2 (available from ICI Plc).
- This member 21 is made from carbon fibres (AS4 grade available from Hercules) set in a matrix of thermoplastic polyetheretherketone (Peek).
- the member 21 which was joined to the coated aluminium alloy 20 was 2mm x 25 mm x 100 mm and was consolidated from 16 layers of 0.125 mm thick unidirectional tape in a configuration known as quasi-isotropic.
- One 25 mm x 100 mm face of the APC-2 member 21 has a 75 ⁇ m layer of PEI consolidated onto its surface.
- the coated aluminium alloy 20 and APC-2 member 21 were then placed in a welding jig, comprising asbestos blocks 32, which allowed a joint overlap 22 of 12.7 mm. This was in order to permit manufacture of a welded structure suitable for testing according to the lap shear testing standard ASTM-D1002-72.
- the welding current was applied in three stages, a 10 second ramp up stage, a 10 second constant current stage and a 10 second ramp down stage.
- a constant current of 40A was applied.
- a pressure of 2.7 N/mm2 16 was applied via the asbestos blocks 32 and consolidated (cooled) for 3 seconds before removal from the jig, to produce a lap shear strength of 32 MPa.
- alumina ceramic 14 of dimensions 100 mm x 150 mm x 0.625 mm were coated in PEI by a technique identical to Example 1 but without the pretreatment stage i.e. 4grams of PEI were dissolved in the solvent mixture previously described and then applied to the alumina ceramic 14 with a paint brush. When the solvent evaporated, a coating of solid PEI remained. For this example, two coatings were applied.
- alumina ceramic 14 may be degreased before being coated from solution with polymer.
- An alternative orientation of the prepreg is an arrangement of 0°/90°/0°/0°/90°/0° in the layers. This arrangement is repeated to achieve the desired thickness of composite.
- Composite materials may be manufactured from thermoplastic composite to ceramic, thermoplastic composite to metal, ceramic to metal or other material combinations using the same technique.
- thermoplastic composite APC-2 was used in all welding trials involving thermoplastic composites.
- This material comprises 61% by volume carbon fibres in a thermoplastic matrix of polyetheretherketone (PEEK).
- PEEK polyetheretherketone
- ICI make this material in the form pre-impregnated (prepreg) tape 0.125mm thick and layers of this tape are processed, by end users of the material, under a suitable pressure and temperature schedule to produce consolidated laminates.
- the prepreg tape contains continuous fibres all running in the same direction within the thermoplastic matrix.
- the relative orientations of fibres in the layers is known as the "lay up" of the consolidated composite.
- the composite lay up of the APC-2 material employed in the welding trials was 0°/45°/90°/-45°/0°/45°/90°/-45°/-45°/90°/45°/0°/-45°/90°/45°/0°, a lay up known as quasi-isotropic.
- Material specimens were 2mm thick by 100mm long and 25mm wide as prescribed by the lap shear testing standard ASTM D1002-72.
- the fibre type was Hercules AS4.
- the alumina was 99.5% pure with the impurities comprising silicon oxide, magnesium oxide, iron oxide and calcium oxide.
- the aluminium nitride ceramic was 97% pure (by weight) with 3% of yttria. Both of these ceramics were used in the form of tiles having dimensions 1mm x 25mm x 50mm.
- Aluminium alloy may be pre-treated by using a technique called unsealed anodising.
- the pretreatment involves immersing the material in an acid bath maintained at constant temperature and passing an electric current through the acid from the aluminium material to another electrode. This results in a porous oxide layer forming on the surface of the aluminium alloy (Fig.6).
- Some form of acid agitation is required to ensure an even growth of the surface oxide layer and this is usually provided by passing air bubbles continuously through the bath.
- thermoplastic material was first dissolved in an organic solvent liquid.
- Certain plastics may be dissolved in this way and two examples of these are polyetherimide (PEI) and polyethersulphone (PES).
- the solvent mixture used to accomplish this was 50% dichloromethane and 50% 112 trichloroethane although 4% methanol was added in cases where a solution of low viscosity needed to be prepared quickly.
- Plastic material was added to 40cm3 of this solvent mixture in the proportions 2.5 grammes of PEI or 4 grammes of PES (Grade 3600P or 5003P).
- the plastic powder was dried in a vacuum oven at 150° for 3 hours being dissolved in the solvent mixture.
- the solvent and polymer mixtures appeared as transparent colourless (PES) or yellow tinted (PEI) liquids with the approximate viscosity of water.
- the pretreated aluminium alloy samples were wetted with one or other of the liquids by application with a paint brush. Evaporation of the solvent was accelerated by placing the samples on a warm hot plate in a fume cupboard.
- Aluminium lithium alloy (RL30 Table 1) was also coated with plastic after having been grit-blasted. This material was not anodised because insufficient information was available about the mechanical properties of the resultant surface oxide layer.
- the resistive implant material 28 was sandwiched between two pieces of extra film material 26 100 ⁇ m thick and placed between an APC-2 specimen 27 and an aluminium alloy specimen 29 coated with PES or PEI.
- This film material 26 was selected to match the adjacent coating or composite matrix material of the aluminium alloy 29 or APC-2 specimen 27 respectively.
- the film 26 adjacent to the APC-2 specimen 27 was either PEEK to match the composite matrix material or PEI to match a special surface layer 30 which may be co-moulded to the composite to allow joining by the amorphous bonding technique.
- the implant 28 was resistively heated and pressure applied.
- Heating current was supplied by one of two power supplies, the Kikusui unit (C531) capable of 30A DC maximum or a McGregor unit (B187) which was capable of at least 160A D.C.
- the welding current was supplied in three stages, a ramp up stage, a peak current stage and a ramp down stage. Peak welding current was applied in the range 20A to 50A and weld pressure in the range 1.4 to 8.0 N/mm2. Although all of the anodising took place in sulphuric acid, joints were made using material with pore depths in the range 5 to 21 ⁇ m as measured by the subcontractor.
- Samples suitable for lap sheer testing were produced as shown in Fig.10. These samples were lap sheer tested at room temperature using an Avery-Denison universal testing machine (Type 7152) at a croos head displacement rate of 5 mm/min. The jaws were 2mm offset so that the tensile forces were parallel to each half of the welded specimen. The shear strength of the weld was calculated by dividing the maximum failure force achieved by the original overlap area. The dimensions of the samples were 101.6 mm x 25.4 mm x 2 mm with an overlap 22 of 12.7 mm.
- Weld RL79 was similar to weld RL48 except that the plastic coating was PEI applied 36 hours after the unsealed anodised samples had been received. The lap shear strength was zero and there was virtually no adhesion to the aluminium alloy.
- Weld RL82 was again similar to weld RL48 except that the depth of anodising was reduced to 8 ⁇ m.
- the lap shear strength of this joint was 28.2N/mm2 and the failure was at the coating and in the APC-2 prepreg material.
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- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
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- Adhesives Or Adhesive Processes (AREA)
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Abstract
Description
- This invention relates to a method of joining members, particularly but not exclusively comprising dissimilar materials.
- Conventional methods of joining dissimilar materials include mechanical fasteners such as bolts and rivets and adhesive bonding. Mechanical fasteners provide an attachment of a known strength at discrete points over the joint. A major disadvantage with this is that mechanical stress applied to the joint is concentrated at the discrete points where the fasteners are situated rather than being spread evenly over the whole joints. They are also inelegant and do not, in general, provide a sealed joint. Adhesively bonded joints (thermosets) spread mechanical stress over the whole joint area but generally are not applicable to components expecting to operate at temperatures above 120°C. US-A-3303954 describes a method of joining foamed polystyrene to a metal using a lacquer, varnish or aqueous polymeric dispersion. In this case, a bond is achieved by initially roughening the surface of the polystyrene. This method is specific to the bonding of foamed polystyrene and is not generally applicable.
- In accordance with the present invention, a method of joining members comprises applying a thermoplastic coating to a surface of at least one of the members by applying the thermoplastic material in solution to the surface and thereafter depositing the thermoplastic material out of solution on to the surface; and joining the two members via the coating(s).
- Examples of members which can be joined using this technique include metal to thermoplastic, for example, APC-2 (peek/carbon composite) to L113 grade aluminium alloy ; metal to ceramic (for example alumina to L113 grade aluminium alloy); metal to metal (for example L113 grade aluminium alloy to a coupon of similar material); ceramic to ceramic (for example silicon carbide reinforced borosilicate glass composite to a coupon of similar material); ceramic to thermoplastic, for example, Cetex (PEI/Aramid composite) to alumina; thermoplastic to thermoset (for example, APC-2 to Hercules 3501 epoxymatrix carbon fibre composite); and thermoplastic composite to wood.
- The key to the successful bonding method is the ability to deposit the thermoplastic material out of solution onto the surface of the member. This enables a strong bond to be achieved between the thermoplastic material and the member following which a good bond can then be achieved between the thermoplastic coating and the other member.
- The choice of polymer coating and solvent will be determined with the aid of certain rules based on the fact that polymers have molecules which are either polar or non-polar. Polar based polymers have molecules which tend to align themselves with an externally applied electric field (for example PVC). These materials tend to have molecules which are not symmetrical i.e. they possess a dipole moment. Guide lines for determining suitable combinations of thermoplastic materials and solvents can then be set out as follows:
- (i) Polar based polymers can in general be swollen or dissolved by a strong polar based or halogenated solvent.
Example: PEI in trichloroethane. - (ii) Non polar based polymers can in general be swollen or dissolved by a strong non polar based or halogenated solvent.
Example: EPDM in toluene or benzene. - (iii) Strong halogenated solvents can usually be used to dissolve both polar and non polar based polymers.
Example: EPDM in chloroform. - A joint could be made between a coated metal member and a thermoplastic member but in other cases the thermoplastic member comprises a thermoplastic coating provided on a metal member.
- In some cases, particularly where the member to be coated is a metal, the step of providing a coating of thermoplastic material includes a step of pre-treating the metal member and thereafter providing the coating. This pre-treatment of the surface may take a variety of forms depending upon the material under consideration. For metals this can include grit blasting or anodizing. The pretreatment step is not limited to metals and may be applied to other materials. For thermoplastic composite ceramics it may be degreasing. However, in the case of ceramics, a pretreatment may not be necessary.
- The joining step may comprise any suitable plastics joining technique, for example, hot gas welding, vibration welding, ultrasonic welding, spin welding, microwave welding, resistance implant welding, dielectric welding, adhesive bonding, induction welding, extrusion welding or solvent welding. Three preferred techniques include resistive implant welding (e.g. aluminium alloy to APC-2), induction welding (e.g. APC-2 to hercules 3501 thermosetting composite) and baking (e.g. alumina to cetex aramid composite). The arrangement of the equipment is very important to the success of the joint because one requirement is that where possible the heat should be concentrated at the joint line. This is particularly important when one or other of the members being joined is affected by the temperatures associated with making the joint. E.G. for the APC-2 to aluminium alloy weld, the coating melts at over 250°C and this is hot enough to cause annealing in the aluminium alloy.
- Some examples of joining metal and thermoplastic members and members of dissimilar materials in accordance with the present invention will now be described with reference to the accompanying drawings, in which:-
- Figure 1 shows two pretreated materials being joined;
- Figure 2 shows a welding arrangement in detail;
- Figure 3 shows a composite manufactured using pretreated materials;
- Figures 4 and 5 illustrate the alignment of fibres in
layers - Figure 6 is a scanning electron micrograph showing the surface of aluminum alloy after anodizing;
- Figure 7 is a scanning electron micrograph showing the surface of the aluminium alloy after anodizing and coating with PES;
- Figure 8 illustrates an assembled lap shear joint;
- Figure 9 is a schematic section of the lap shear joint; and,
- Figure 10 illustrates the dimensions of a shear test sample.
- Figure 1 illustrates two materials to be joined 8,11, eg a metal and a ceramic. At least the
metal 8 has been surface pretreated and then both materials have been coated with apolymer coating 6. A prepreg insert includingcarbon fibres 9 covered bypolymer films 7 is placed between the twomaterials carbon fibres 9 in the prepreg insert. The current causes resistive heating of thepolymer films 7 which fuse to thepolymer coating 6 on the surface of each piece ofmaterial pressure 16 of 1.3 N/mm² and for a total weld time of 40 seconds. - The polymer coating 6 (e.g. polyetherimide (PEI) or polyethersulphone (PES), generally a thermoplastic coating) is applied in liquid form having been dissolved in a suitable solvent mixture, e.g. 48% by volume 1,1,2-trichloroethane + 48% by volume Dichloromethane + 4% by volume Methanol. The solvent subsequently evaporates leaving the
polymer coating 6 on the material surface. - In the case of aluminium alloy the pretreatment may be by an "unsealed anodized" method which involves immersing the specimen in a bath of a suitable acid held at constant temperature. An electric current then flows through the acid from the specimen to another electrode. The effect on the surface of the specimen is to produce pores on a microscopic scale to which the
thermoplastic coating 6 can adhere to produce a strong interface. - Other metallic materials to be joined to thermoplastic include steel and titanium which can be subjected to an appropriate pretreatment step.
- Experiments have achieved joint strengths (Lap Shear) in the order of 30 N/mm² between A1 alloy and APC2 thermoplastic composite.
- A more detailed example will be described with reference to Figure 2.
- A specimen of aluminium alloy (grade L113) of dimensions 1.6 mm x 25 mm x 100 mm was pretreated according to a specific schedule. The chemical composition of the aluminium alloy L113, was as shown in Table 1 hereinafter.
- The pretreatment schedule for the aluminium alloy was as follows:-
- i) The alloy was cleaned in a tank of 10% by volume Oakite NST (available from Oakite Limited) at a temperature of 55°C for 5 minutes, then washed in mains water.
- ii) The alloy was then pickled in an etch comprising 50 grammes/litre (of water) chrome trioxide and 300 grammes/litre (of water) sulphuric acid. This liquid was kept at 65°C and the immersion time for the alloy was 15 minutes. The pickled alloy was then washed in mains water.
- iii) Next the alloy was anodized in a bath of 10% by weight orthophosphoric acid at room temperature using an anodizing voltage of 10V for 25 minutes, then washed in mains water.
- After this the alloy was rinsed in deionised water, surplus water was removed and the alloy dried in an oven at 50°C.
- Following the pretreatment step, the alloy was coated in a layer of thermoplastic polyethermide (PEI which is available from GE plastics as "Ultem"). The coating was supplied from a solvent solution prepared in the following way:- A solvent mixture of 48% Dichloromethane, 48% 1,1,2 - Trichloroethane, and 4% Methanol was made up (all proportions by volume).
- To 40 cc of this solvent mixture was added 4 grammes of PEI which dissolved after a few minutes.
- The resultant liquid was painted onto the surface of the aluminium alloy using a paintbrush immediately after the completion of the pretreatment. This method of coating is known to produce a plastic layer of non-uniform thickness over the surface of the alloy. A single coating has been measured as being between 2 and 5µm in depth by a scanning electron microscope. The solvents evaporate from the surface of the alloy leaving a solid plastic coating.
- The coated aluminium alloy 20 (Figure 2) is then ready to be joined to a piece of thermoplastic composite material such as a
member 21 made of APC-2 (available from ICI Plc). Thismember 21 is made from carbon fibres (AS4 grade available from Hercules) set in a matrix of thermoplastic polyetheretherketone (Peek). - The
member 21 which was joined to the coatedaluminium alloy 20 was 2mm x 25 mm x 100 mm and was consolidated from 16 layers of 0.125 mm thick unidirectional tape in a configuration known as quasi-isotropic. One 25 mm x 100 mm face of the APC-2member 21 has a 75µm layer of PEI consolidated onto its surface. The coatedaluminium alloy 20 and APC-2member 21 were then placed in a welding jig, comprising asbestos blocks 32, which allowed ajoint overlap 22 of 12.7 mm. This was in order to permit manufacture of a welded structure suitable for testing according to the lap shear testing standard ASTM-D1002-72. - An electric welding current was passed between copper bus bars 23, through carbon
fibre preimpregnated tape 24 which had previously been subjected to a flame in the region of connection to the bus bars 23. This had the effect of baring the carbon fibres locally while leavingplastic impregnation 31 around the fibres in the region of the weld. - The welding current was applied in three stages, a 10 second ramp up stage, a 10 second constant current stage and a 10 second ramp down stage. During the constant current stage a constant current of 40A was applied. A pressure of 2.7 N/
mm² 16 was applied via the asbestos blocks 32 and consolidated (cooled) for 3 seconds before removal from the jig, to produce a lap shear strength of 32 MPa. - The above technique may be used to manufacture a composite material as shown in Figure 3.
- Ten pieces of
alumina ceramic 14 of dimensions 100 mm x 150 mm x 0.625 mm were coated in PEI by a technique identical to Example 1 but without the pretreatment stage i.e. 4grams of PEI were dissolved in the solvent mixture previously described and then applied to thealumina ceramic 14 with a paint brush. When the solvent evaporated, a coating of solid PEI remained. For this example, two coatings were applied. - Nine pieces of unidirectional kevlar reinforced PEI
composite tape 12,13 (available from Ten Cate under the trade name Cetex) were cut to a size of 10 mm x 150 mm x the thickness of the tape and placed between alternate sheets ofalumina ceramic 14. The alignment of the fibres inlayers polymer films 15. This plastic composite/ceramic sandwich was then mounted on analignment jig 25, itself constructed from machineable ceramic (pyrophyllite from Morgan Matroc). - This sandwich of 10 layers of
alumina ceramic kevlar composite pressure 16 of 0.01 N/mm². The adhesion of the materials appeared to be very good although no direct mechanical tests were attempted. - Alternatively the
alumina ceramic 14 may be degreased before being coated from solution with polymer. - It is not essential to interleave the aluminium ceramic and PEI/Kevlar prepreg layers 12,13 with
polymer films 15. An alternative orientation of the prepreg is an arrangement of 0°/90°/0°/0°/90°/0° in the layers. This arrangement is repeated to achieve the desired thickness of composite. - Composite materials may be manufactured from thermoplastic composite to ceramic, thermoplastic composite to metal, ceramic to metal or other material combinations using the same technique.
- Some further work will now be described in which various combinations of materials were joined.
- The aim of this work was to produce joints between the continuous carbon fibre reinforced thermoplastic composite material APC-2 and aluminium alloy. However, joints were also made between other dissimilar material combinations including carbon fibre thermoplastic composite to alumina ceramic and aluminium alloy to allumina ceramic.
- The continuous carbon fibre reinforced thermoplastic composite APC-2 was used in all welding trials involving thermoplastic composites. This material comprises 61% by volume carbon fibres in a thermoplastic matrix of polyetheretherketone (PEEK). ICI make this material in the form pre-impregnated (prepreg) tape 0.125mm thick and layers of this tape are processed, by end users of the material, under a suitable pressure and temperature schedule to produce consolidated laminates. The prepreg tape contains continuous fibres all running in the same direction within the thermoplastic matrix. In order to produce consolidated structures of a predetermined stiffness and strength, it is possible to orientate the direction of the tapes such that fibres in one tape layer make a known angle with fibres in the adjacent tape layers. The relative orientations of fibres in the layers is known as the "lay up" of the consolidated composite.
- The composite lay up of the APC-2 material employed in the welding trials was 0°/45°/90°/-45°/0°/45°/90°/-45°/-45°/90°/45°/0°/-45°/90°/45°/0°, a lay up known as quasi-isotropic. Material specimens were 2mm thick by 100mm long and 25mm wide as prescribed by the lap shear testing standard ASTM D1002-72. The fibre type was Hercules AS4.
- In addition to the 16 plys of unidirectional carbon fibre prepreg tape, some of the specimens had a layer of the amorphous polymer polyetherimide (PEI) co-moulded onto one surface. This layer plays an important role in the amorphous bonding technique sometimes used for induction welding of APC-2 as previously described.
- Several grades of aluminium alloy material were used in the welding trials. The chemical analyses of these materials are presented in Table 1.
- Joints involving three ceramic materials were investigated and these materials were alumina, aluminium nitride and a silicon carbide reinforced borosilicate glass composite.
- The alumina was 99.5% pure with the impurities comprising silicon oxide, magnesium oxide, iron oxide and calcium oxide. The aluminium nitride ceramic was 97% pure (by weight) with 3% of yttria. Both of these ceramics were used in the form of tiles having dimensions 1mm x 25mm x 50mm.
- The composition of the borosilicate glass matrix of the silicon carbide composite is presented in table 2 (analysis supplied by Pilkington plc).
- Aluminium alloy may be pre-treated by using a technique called unsealed anodising. The pretreatment involves immersing the material in an acid bath maintained at constant temperature and passing an electric current through the acid from the aluminium material to another electrode. This results in a porous oxide layer forming on the surface of the aluminium alloy (Fig.6). Some form of acid agitation is required to ensure an even growth of the surface oxide layer and this is usually provided by passing air bubbles continuously through the bath.
- It is possible to use various acid concentrations and types to create the surface oxide layer, and pretreatments using phosphoric, chromic and sulphuric acid are all well documented in the literature For these welding trials, a bath of 15% sulphuric acid at a temperature of 20-24° was used.
- Unsealed anodised specimens were coated with plastic as soon as possible after the pretreatment because the pores tend to seal themselves within hours of being produced, due to the effects of air and moisture.
- In order to coat the anodised aluminium alloy, thermoplastic material was first dissolved in an organic solvent liquid. Certain plastics may be dissolved in this way and two examples of these are polyetherimide (PEI) and polyethersulphone (PES). The solvent mixture used to accomplish this was 50% dichloromethane and 50% 112 trichloroethane although 4% methanol was added in cases where a solution of low viscosity needed to be prepared quickly.
- Plastic material was added to 40cm³ of this solvent mixture in the proportions 2.5 grammes of PEI or 4 grammes of PES (Grade 3600P or 5003P). The plastic powder was dried in a vacuum oven at 150° for 3 hours being dissolved in the solvent mixture.
- The solvent and polymer mixtures appeared as transparent colourless (PES) or yellow tinted (PEI) liquids with the approximate viscosity of water. The pretreated aluminium alloy samples were wetted with one or other of the liquids by application with a paint brush. Evaporation of the solvent was accelerated by placing the samples on a warm hot plate in a fume cupboard.
- In this way, a very thin plastic coating was formed on the surface of the aluminium alloy and polymer was assumed to penetrate the pores produced by anodizing (Fig. 7).
- Aluminium lithium alloy (RL30 Table 1) was also coated with plastic after having been grit-blasted. This material was not anodised because insufficient information was available about the mechanical properties of the resultant surface oxide layer.
- At this stage several conventional plastic joining techniques could have been considered to join APC-2 material to the coated metal, for example, hot plate welding or induction welding. However, the technique selected was resistive implant welding using a piece of unidirectional carbon fibre prepreg tape as the implant material. The glass transition temperature for PES is 225°C and 230°C for PEI, but the temperature required to make a weld is probably over 300°C. At this temperature there is a tendency for the aluminium alloy to lose its mechanical stiffness due to annealing. For this reason a process which concentrated the heat at the weld joint was required and this was guaranteed by the resistive implant technique. Figures 8 and 9 show an assembled shear joint prior to welding. The
resistive implant material 28 was sandwiched between two pieces ofextra film material 26 100µm thick and placed between an APC-2specimen 27 and analuminium alloy specimen 29 coated with PES or PEI. Thisfilm material 26 was selected to match the adjacent coating or composite matrix material of thealuminium alloy 29 or APC-2specimen 27 respectively. Thefilm 26 adjacent to the APC-2specimen 27 was either PEEK to match the composite matrix material or PEI to match aspecial surface layer 30 which may be co-moulded to the composite to allow joining by the amorphous bonding technique. - The
implant 28 was resistively heated and pressure applied. - Heating current was supplied by one of two power supplies, the Kikusui unit (C531) capable of 30A DC maximum or a McGregor unit (B187) which was capable of at least 160A D.C.
- The welding current was supplied in three stages, a ramp up stage, a peak current stage and a ramp down stage. Peak welding current was applied in the range 20A to 50A and weld pressure in the range 1.4 to 8.0 N/mm². Although all of the anodising took place in sulphuric acid, joints were made using material with pore depths in the range 5 to 21µm as measured by the subcontractor.
- Welds were also made between the following material combinations:
- APC-2 and alumina ceramic
- aluminium alloy and alumina ceramic
- aluminium alloy and aluminium nitride ceramic
- Si-carbide reinforced borosilicate glass composite to itself.
- In each case the technique of coating the ceramic and metallic parts with a plastic dissolved in a solvent mixture, was followed.
- No surface pretreatment was required for the ceramic specimens since they were able to provide sufficient keying for the plastic in their untreated state.
- Samples suitable for lap sheer testing were produced as shown in Fig.10. These samples were lap sheer tested at room temperature using an Avery-Denison universal testing machine (Type 7152) at a croos head displacement rate of 5 mm/min. The jaws were 2mm offset so that the tensile forces were parallel to each half of the welded specimen. The shear strength of the weld was calculated by dividing the maximum failure force achieved by the original overlap area. The dimensions of the samples were 101.6 mm x 25.4 mm x 2 mm with an
overlap 22 of 12.7 mm. - Anodised and coated specimens were examined using a scanning electron microscope.
- Untested welds were examined visually, both externally and by sectioning and polishing. Sections were taken at 90° to the length of the specimen (Fig. 10), at the position AB.
- The best result of trials conducted on aluminium lithium alloy is given in Table 3. The lap shear strength of this weld (RL27) was 13.7N/mm² and was achieved on a specimen which had been grit-blasted and coated with PES.
- Welding trials continued with some L113 grade aluminium alloy which was unsealed anodized to a depth of 20µm. The strongest joints were achieved using the 5003P PES coating material with PEI film between the APC-2 prepreg implant and the APC-2 bulk speciment material (with consolidated PEI layer at the surface). This combination produced the lap shear specimen displaying the greatest strength which was weld RL48 at 29.6N/mm². (Table 3).
- Weld RL79 was similar to weld RL48 except that the plastic coating was PEI applied 36 hours after the unsealed anodised samples had been received. The lap shear strength was zero and there was virtually no adhesion to the aluminium alloy.
- Weld RL82 was again similar to weld RL48 except that the depth of anodising was reduced to 8µm. The lap shear strength of this joint was 28.2N/mm² and the failure was at the coating and in the APC-2 prepreg material.
- Joints were made between a variety of dissimilar materials, APC-2 to alumina ceramic, aluminium alloy to alumina ceramic aluminium alloy to aluminium nitride ceramic and the silicon carbide/borosilicate glass composite material to itself Lap shear tests for each combination were attempted but the ceramics broke, but the ceramics broke in the jaws of the test machine leaving the PCM joint intact.
- Of the lap shear specimens produced, the best results were achieved using PES as the coating material and anodizing depths of between 5 and 21µm in aluminium alloy. Inferior lap shear strengths were achieved when the aluminium alloy surface pretreatment comprised grit blasting and coating with PEI. The effects of using specimens anodised in different acid, eg phosphoric or chromic acid are as yet unmeasured although they are expected to improve the lap shear strength of joints further by virtue of the fact that the resulting surface pores are known to be of a larger diameter than those produced by sulphuric acid anodising.
Claims (8)
- A method of joining members (8,11), the method comprising applying a thermoplastic coating (6) to a surface of at least one of the members (8,11) by applying the thermoplastic material in solution to the surface and thereafter depositing the thermoplastic material out of solution on to the surface; and joining the two members (8,11) via the coating (s) (6).
- A method according to claim 1, wherein the members (8,11) comprise dissimilar materials.
- A method of joining members (8,11) according to claim 1 or claim 2, wherein the members comprise a metal and a thermoplastic.
- A method according to claim 3, wherein the thermoplastic member comprises a thermoplastic coating provided on a metal member.
- A method according to claim 3 or claim 4, wherein the step of providing a coating of thermoplastic material includes a step of pretreating the metal member and thereafter providing the coating.
- A method according to any of claims 3 to 5, wherein the metal member comprises an aluminium alloy.
- A method according to any of claims 3 to 6, wherein the thermoplastic member is joined to the thermoplastic coating by resistance implant welding.
- A method according to any of claims 5 to 7, wherein the pretreatment comprises an anodizing process.
Applications Claiming Priority (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB9101099 | 1991-01-18 | ||
GB919101099A GB9101099D0 (en) | 1991-01-18 | 1991-01-18 | Joining method |
GB919109176A GB9109176D0 (en) | 1991-04-29 | 1991-04-29 | Joining method |
GB9109176 | 1991-04-29 | ||
GB9122156 | 1991-10-18 | ||
GB919122156A GB9122156D0 (en) | 1991-10-18 | 1991-10-18 | Joining method |
Publications (2)
Publication Number | Publication Date |
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EP0495655A1 true EP0495655A1 (en) | 1992-07-22 |
EP0495655B1 EP0495655B1 (en) | 1995-11-08 |
Family
ID=27265460
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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EP19920300368 Expired - Lifetime EP0495655B1 (en) | 1991-01-18 | 1992-01-16 | Joining method |
Country Status (4)
Country | Link |
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EP (1) | EP0495655B1 (en) |
JP (1) | JPH05230424A (en) |
AT (1) | ATE129957T1 (en) |
DE (1) | DE69205844D1 (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1920906A1 (en) * | 2005-09-01 | 2008-05-14 | Osaka University | Method for joining metal and resin and metal-resin composite, method for joining glass and resin and glass-resin composite, and method for joining ceramic and resin and ceramic-resin composite |
US7862072B2 (en) | 2006-03-06 | 2011-01-04 | Intier Automotive Inc. | Passenger air bag chute assembly |
WO2012013651A3 (en) * | 2010-07-27 | 2012-03-22 | Ewald Dörken Ag | Method for producing an adhesive connection between a workpiece having a metal surface and a workpiece having a plastic workpiece |
CN104245282A (en) * | 2012-03-29 | 2014-12-24 | 帝人株式会社 | Method for manufacturing joint member, and joint member |
US20150030864A1 (en) * | 2012-04-09 | 2015-01-29 | Teijin Limited | Method for Manufacturing Joint Member and Joint Member |
EP3017931A1 (en) * | 2014-11-06 | 2016-05-11 | Centro di Progettazione Design & Tecnologie dei Materiali | Induction welding method for electrically conducting composite materials having a thermosetting matrix |
US11413828B2 (en) | 2017-05-22 | 2022-08-16 | Ratier-Figeac Sas | Aircraft blade and methods of forming and repairing an aircraft blade |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7255770B2 (en) | 2002-08-12 | 2007-08-14 | Mentor Corporation | Method for laser welding flexible polymers |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
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US3303954A (en) * | 1962-03-30 | 1967-02-14 | Grace W R & Co | Bonding foamed polystyrene to metal |
US4386991A (en) * | 1980-02-18 | 1983-06-07 | Mitsui Petrochemical Industries, Ltd. | Method of bonding 4-methyl-1-pentene polymers |
US4753708A (en) * | 1983-06-16 | 1988-06-28 | Rohm Gmbh | Method for heat sealing |
-
1992
- 1992-01-16 EP EP19920300368 patent/EP0495655B1/en not_active Expired - Lifetime
- 1992-01-16 DE DE69205844T patent/DE69205844D1/en not_active Expired - Lifetime
- 1992-01-16 AT AT92300368T patent/ATE129957T1/en not_active IP Right Cessation
- 1992-01-17 JP JP2615892A patent/JPH05230424A/en not_active Withdrawn
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3303954A (en) * | 1962-03-30 | 1967-02-14 | Grace W R & Co | Bonding foamed polystyrene to metal |
US4386991A (en) * | 1980-02-18 | 1983-06-07 | Mitsui Petrochemical Industries, Ltd. | Method of bonding 4-methyl-1-pentene polymers |
US4753708A (en) * | 1983-06-16 | 1988-06-28 | Rohm Gmbh | Method for heat sealing |
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1920906A1 (en) * | 2005-09-01 | 2008-05-14 | Osaka University | Method for joining metal and resin and metal-resin composite, method for joining glass and resin and glass-resin composite, and method for joining ceramic and resin and ceramic-resin composite |
EP1920906A4 (en) * | 2005-09-01 | 2010-10-06 | Univ Osaka | Method for joining metal and resin and metal-resin composite, method for joining glass and resin and glass-resin composite, and method for joining ceramic and resin and ceramic-resin composite |
US7862072B2 (en) | 2006-03-06 | 2011-01-04 | Intier Automotive Inc. | Passenger air bag chute assembly |
WO2012013651A3 (en) * | 2010-07-27 | 2012-03-22 | Ewald Dörken Ag | Method for producing an adhesive connection between a workpiece having a metal surface and a workpiece having a plastic workpiece |
US9238328B2 (en) | 2010-07-27 | 2016-01-19 | Ewald Doerken Ag | Method for producing an adhesive connection |
CN104245282A (en) * | 2012-03-29 | 2014-12-24 | 帝人株式会社 | Method for manufacturing joint member, and joint member |
EP2832526A1 (en) * | 2012-03-29 | 2015-02-04 | Teijin Limited | Method for manufacturing joint member, and joint member |
EP2832526A4 (en) * | 2012-03-29 | 2015-03-25 | Teijin Ltd | Method for manufacturing joint member, and joint member |
US9527230B2 (en) | 2012-03-29 | 2016-12-27 | Teijin Limited | Method for manufacturing joint member and joint member |
US20150030864A1 (en) * | 2012-04-09 | 2015-01-29 | Teijin Limited | Method for Manufacturing Joint Member and Joint Member |
EP3017931A1 (en) * | 2014-11-06 | 2016-05-11 | Centro di Progettazione Design & Tecnologie dei Materiali | Induction welding method for electrically conducting composite materials having a thermosetting matrix |
US11413828B2 (en) | 2017-05-22 | 2022-08-16 | Ratier-Figeac Sas | Aircraft blade and methods of forming and repairing an aircraft blade |
Also Published As
Publication number | Publication date |
---|---|
DE69205844D1 (en) | 1995-12-14 |
JPH05230424A (en) | 1993-09-07 |
ATE129957T1 (en) | 1995-11-15 |
EP0495655B1 (en) | 1995-11-08 |
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